FactChecker's latest activity
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FactChecker reacted to SchrodingersRat's post in the thread High School Question about entanglement and spacetime with
Like.
Actually I found an article that answered these questions nicely. I´m sorry for taking up people´s time. -
FactChecker replied to the thread Joint distribution of sequential variables.Good point! For homework-type problems, you need to show your work before we are allowed to give guidance and make comments.
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FactChecker reacted to Gear300's post in the thread Joint distribution of sequential variables with Like.
The set of possible points should be that half triangular area in the unit square where x2 < x1. But I don't think it is uniformly...
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FactChecker replied to the thread Joint distribution of sequential variables.You should show us some work on a homework problem before we can give you some hints. You can start with drawing the possible area on a...
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FactChecker reacted to PeterDonis's post in the thread High School Question about entanglement and spacetime with Like.
Hi, and welcome to PF! It would help if you could give some specific references to where you have read this. However, I suspect what...
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FactChecker reacted to DrChinese's post in the thread High School Question about entanglement and spacetime with
Informative.
:welcome: Entangled systems are not "synchronized" as you imagine. They follow a set of rules that can be difficult to understand for... -
FactChecker reacted to PeroK's post in the thread Undergrad What empirical observation supports the axiom of continuous spacetime? with Like.
It isn't. No one has found a way to make a discrete theory work. The continuum is simpler mathematically and thereby the default...
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FactChecker reacted to Ibix's post in the thread High School Do Dark Energy and the Casimir effect indicate Exotic Matter could exist? with Like.
I don't think the Casimir effect does, no. My limited understanding is that it can be rewritten as an effect of van der Waals forces...
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FactChecker replied to the thread Undergrad Is this proof "by contradiction" or "by contrapositive"?.That is contrapositive. Given a statement, ##A \implies B##, the only thing it assumes is ##\neg B## and it concludes ##\neg A##.
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FactChecker replied to the thread Undergrad Is this proof "by contradiction" or "by contrapositive"?.They did initially assume that a is rational and b is irrational, and they used the assumption about a in the proof to say that a=m/n...
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FactChecker replied to the thread Undergrad Infinity and 0 (null set) do not exist.I would be more inclined to say that much of the universe is "ruled" exponentially and just presented or graphed logarithmically in...
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FactChecker reacted to PeroK's post in the thread Undergrad Infinity and 0 (null set) do not exist with Like.
There are several uses of term "infinite", "infinity", or the symbol ##\infty## in mathematics. The natural numbers, for example, is an...
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FactChecker reacted to bob012345's post in the thread Undergrad Infinity and 0 (null set) do not exist with
Haha.
That is until someone falls into a black hole and gets spaghettified. -
Euler's equations for rigid body dynamics allow torque-free precession. An often-seen problem in intermediate Classical Mechanics is to...
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FactChecker replied to the thread Undergrad Infinity and 0 (null set) do not exist.We need to distinguish between the existence of a physical object versus the existence of a concept. By its own definition(?), the null...